A selective serotonin reuptake inhibitor (SSRI), Citalopram is used for the treatment of depression, obsessive–compulsive disorder and panic disorders. It exists in two enatiomeric forms S-(+)-citalopram and R-(–)-citalopram. The S enantiomer provides the anti depressant effects. Reference standards of Citalopram API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
Citalopram N-Oxide
Catalogue No.:PA 03 57510
CAS :
Molecular Formula : C20H21FN2O2
Molecular Weight : 340.39
4-[4-(Dimethylamino)-1-(4-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)benzonitrile
Catalogue No.:PA 03 57520
Molecular Formula : C20H23FN2O2
Molecular Weight : 342.41
Citalopram Carboxylic Acid
Catalogue No.:PA 03 57530
Molecular Formula : C20H22FNO3
Molecular Weight : 343.39
Citalopram Alkene Dimer Chloride
Catalogue No.:PA 03 57540
Molecular Formula : C40H41ClF2N4O-
Molecular Weight : 667.23
Citalopram Chloromethyl Quartenary Ammonium Salt
Catalogue No.:PA 03 57550
Molecular Formula : C21H23Cl2FN2O
Molecular Weight : 409.32
1-(3-(Dimethylamino)propyl)-1-phenyl-1,3-dihydroisobenzofuran-5-carbonitrile
Catalogue No.:PA 03 57560
Molecular Formula : C20H22N2O
Molecular Weight : 306.4
rac Didemethyl Citalopram Dihydrochloride
Catalogue No.:PA 03 57570
Molecular Formula : C18H19Cl2FN2O
Molecular Weight : 369.26
3-(1-(4-Fluorophenyl)-1,3-dihydroisobenzofuran-1-yl)-N,N-dimethylpropan-1-amine Hydrobromide
Catalogue No.:PA 03 57580
Molecular Formula : C19H23BrFNO
Molecular Weight : 380.29
1-(4-Fluorophenyl)-1,3-DihydroIsobenzofuran-5-Carbonitrile
Catalogue No.:PA 03 57590
Molecular Formula : C15H10FNO
Molecular Weight : 239.24
Desfluoro Citalopram Hydrobromide
Catalogue No.:PA 03 57600
Molecular Formula : C20H23BrN2O
Molecular Weight : 387.31
(R)-Citalopram
Catalogue No.:PA 03 57610
Molecular Formula : C20H21FN2O
Molecular Weight : 324.39
(R)-Citalopram Oxalate
Catalogue No.:PA 03 57620
Molecular Formula : C22H23FN2O5
Molecular Weight : 414.43
(S)-Desmethyl Citalopram Ethanedioate
Catalogue No.:PA 03 57630
Molecular Formula : C21H21FN2O5
Molecular Weight : 400.4
Citadiol Hydrobromide
Catalogue No.:PA 03 57640
Molecular Formula : C20H24BrFN2O2
Molecular Weight : 423.32
(S)-Citalopram N-Oxide
Catalogue No.:PA 03 57650
Citalopram N-Oxide Hydrochloride
Catalogue No.:PA 03 57660
Molecular Formula : C20H22ClFN2O2
Molecular Weight : 376.85
(S)-N-Didesmethyl Citalopram Oxalate
Catalogue No.:PA 03 57670
Molecular Formula : C20H19FN2O5
Molecular Weight : 386.37
rac Desfluoro Citalopram Oxalate
Catalogue No.:PA 03 57680
Molecular Formula : C22H24N2O5
Molecular Weight : 396.44
Acetyl Citalopram-d6 Oxalate
Catalogue No.:PA STI 002180
Molecular Formula : C23H20D6FNO6
Molecular Weight : 437.49
5-Bromodescyano Citalopram-d4
Catalogue No.:PA STI 014650
Molecular Formula : C19H17D4BrFNO
Molecular Weight : 382.30
(4-Bromo-2-(hydroxymethyl)phenyl)(4-fluorophenyl-d4)methanone
Catalogue No.:PA STI 015050
Molecular Formula : C14H6D4BrFO2
Molecular Weight : 313.16
N-Chloromethyl Citalopram-d6 Chloride
Catalogue No.:PA STI 020140
Molecular Formula : C21H17D6Cl2FN2O
Molecular Weight : 415.36
Citalopram-d4
Catalogue No.:PA STI 021680
Molecular Formula : C20H17D4FN2O
Molecular Weight : 328.42
(S)-Citalopram-d4 Oxalate
Catalogue No.:PA STI 021681
Molecular Formula : C22H19D4FN2O5
Molecular Weight : 418.45
Citalopram-d6
Catalogue No.:PA STI 021690
Molecular Formula : C20H15D6FN2O
Molecular Weight : 330.43
Citalopram-d6 Oxalate
Catalogue No.:PA STI 021700
Molecular Formula : C22H17D6FN2O5
Molecular Weight : 420.46
Citalopram-d4 Hydrobromide Salt
Catalogue No.:PA STI 021710
Molecular Formula : C20H18D4BrFN2O
Molecular Weight : 409.33
(S)-Citalopram-d6 Oxalate
Catalogue No.:PA STI 021720
(R)-Citalopram-d6 Oxalate
Catalogue No.:PA STI 021730
Citalopram-d6 N-Oxide
Catalogue No.:PA STI 021740
Molecular Formula : C20H15D6FN2O2
Molecular Weight : 346.43
(R)-Citalopram-d6 N-Oxide
Catalogue No.:PA STI 021750
(S)-Citalopram-d6 N-Oxide
Catalogue No.:PA STI 021760
rac Demethyl Citalopram-d3
Catalogue No.:PA STI 025570
Molecular Formula : C19H16D3FN2O
Molecular Weight : 313.38
rac Demethyl Citalopram-d3 Hydrochloride
Catalogue No.:PA STI 025580
Molecular Formula : C19H17D3ClFN2O
Molecular Weight : 349.84
rac Desmethyl Citalopram-d4 Hydrobromide
Catalogue No.:PA STI 025590
Molecular Formula : C19H16D4BrFN2O
Molecular Weight : 395.30
(S)-Desfluoro Citalopram-d6 Oxalate
Catalogue No.:PA STI 027640
Molecular Formula : C22H18D6N2O5
Molecular Weight : 402.47
rac Didemethyl Citalopram-d6 Hydrochloride
Catalogue No.:PA STI 030830
Molecular Formula : C18H12D6ClFN2O
Molecular Weight : 338.84
Didemethyl Citalopram-d6 Hydrobromide
Catalogue No.:PA STI 030840
Molecular Formula : C18H12D6BrFN2O
Molecular Weight : 383.29
4-[4-(dimethyl-d6-amino)-1-(4-fluorophenyl)-1-buten-1-yl]-3-(hydroxymethyl)-benzonitrile (Citalopram Olefinic Impurity)
Catalogue No.:PA STI 033740
N-Trifluoroacetodesmethyl Citalopram-d3
Catalogue No.:PA STI 084740
Molecular Formula : C21H15D3F4N2O2
Molecular Weight : 409.39
N,N,1-Trimethyl-3,3-diphenylallylamine-d10 Hydrochloride
Catalogue No.:PA STI 085330
Molecular Formula : C18H12D10ClN
Molecular Weight : 297.89
R-Citalopram Oxalate , (R-1-[3-(dimethylamino)propyl]-1-(p-fluorophenyl)-5-phthalancarbonitrile oxal (1134142)
Catalogue No.:PA USP1134142
Molecular Formula : NA
Molecular Weight : NA
Citalopram Related Compound F (dimethyl-(1-methyl-3,3-diphenyl-allyl)-amine hydrochloride) (1134299)
Catalogue No.:PA USP1134299
citalopram hydrobromide (1153RB)
Catalogue No.:PA BP1153RB
citalopram impurity standard (1154RB)
Catalogue No.:PA BP1154RB
Citalopram Related Compound D 1-(4-Fluorophenyl)-1-(3-methylaminopropyl)-1,3-dihydroisobenzofuran-5 (1134277)
Catalogue No.:PA USP1134277
Citalopram Related Compound E (1-(3-dimethylaminopropyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzofura (1134288)
Catalogue No.:PA USP1134288
Citalopram Related Compound H (1-(4'-fluorophenyl)-1-(3-dimethylaminopropyl)-5-bromophthalane hydro (1134222)
Catalogue No.:PA USP1134222
Citalopram Hydrobromide (1134233)
Catalogue No.:PA USP1134233
Citalopram Related Compound A (1-(3-dimethylaminopropyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzofura (1134244)
Catalogue No.:PA USP1134244
Citalopram hydrobromide (Y0001008)
Catalogue No.:PA EPY0001008
Citalopram Related Compound G (1-(4'-fluorophenyl)-1-(3-dimethylaminopropyl)-5-chlorophthalane hydr (1134197)
Catalogue No.:PA USP1134197
Citalopram Related Compound B (1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-3-hydroxy-1,3-dihydro (1134255)
Catalogue No.:PA USP1134255
Citalopram Related Compound C (3-(3-Dimethylaminopropyl)-3-(4-fluorophenyl)-6-cyano-1(3H)-isobenzof (1134266)
Catalogue No.:PA USP1134266
Citalopram hydrochloride (Y0001007)
Catalogue No.:PA EPY0001007
Citalopram for system suitability (Y0000855)
Catalogue No.:PA EPY0000855
Citadiol
Catalogue No.:PAI 03 002510
5-Chloro-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran
Catalogue No.:PAI 03 002010
Molecular Formula : C14H10ClFO
Molecular Weight : 248.68
(4-Chloro-2-(hydroxymethyl)phenyl)(4-fluorophenyl)methanol
Catalogue No.:PAI 03 002020
Molecular Formula : C14H12ClFO2
Molecular Weight : 266.70
2-(3-Chloropropyl)isoindole-1,3-dione
Catalogue No.:PAI 03 002030
Molecular Formula : C11H10ClNO2
Molecular Weight : 223.66
1-(3-(1,3-Dioxoisoindolin-2-yl)propyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carbonitrile
Catalogue No.:PAI 03 002040
Molecular Formula : C26H19FN2O3
Molecular Weight : 426.45
N-Didesmethyl Citalopram
Catalogue No.:PAI 03 002050
Molecular Formula : C18H17FN2O
Molecular Weight : 296.35
3-(((tert-Butyldimethylsilyl)oxy)methyl)-4-(4-(dimethylamino)-1-(4-fluorophenyl)-1-hydroxybutyl)benzonitrile
Catalogue No.:PAI 03 002060
Molecular Formula : C26H37FN2O2Si
Molecular Weight : 456.67
1-(2-(((tert-Butyldimethylsilyl)oxy)methyl)-4-cyanophenyl)-4-(dimethylamino)-1-(4-fluorophenyl)butyl methanesulfonate
Catalogue No.:PAI 03 002070
Molecular Formula : C27H39FN2O4SSi
Molecular Weight : 534.76
3-(((tert-Butyldimethylsilyl)oxy)methyl)-4-(4-(dimethylamino)-1-(4-fluorophenyl)but-1-en-1-yl)benzonitrile
Catalogue No.:PAI 03 002080
Molecular Formula : C26H35FN2OSi
Molecular Weight : 438.65
N-(3-Bromopropyl)phthalimide
Catalogue No.:PAI 03 002090
Molecular Formula : C11H10BrNO2
Molecular Weight : 268.11
3-Chloro-N,N-bis(trimethylsilyl)propan-1-amine
Catalogue No.:PAI 03 002100
Molecular Formula : C9H24ClNSi2
Molecular Weight : 237.92
Citalopram
Catalogue No.:PA 56 80000
Molecular Weight : 324.4
4-(3-(Dimethylamino)propyl)-4-(4-fluorophenyl)isochromane-7-carbonitrile
Catalogue No.:PA 03 57690
Molecular Formula : C21H23FN2O
Molecular Weight : 338.43
3,3'-((Methylenebis(oxy))bis(methylene))bis(4-(4-(dimethylamino)-1-(4-fluorophenyl)butyl)benzonitrile)
Catalogue No.:PA 03 57700
Molecular Formula : C41H46F2N4O2
Molecular Weight : 664.84
N,N,1-Trimethyl-3,3-diphenylallylamine Hydrochloride
Catalogue No.:PA 30 94520
Molecular Formula : C18H22ClN
Molecular Weight : 287.83
Catalogue No.:PA IPIPRS 69 12
Molecular Formula :
4-(4-(Dimethylamino)-1-(4-fluorophenyl)-1-hydroxybutyl)-3-(hydroxymethyl)benzonitrile Hydrochloride
Catalogue No.:PA 30 94530
Molecular Formula : C20H24ClFN2O2
Molecular Weight : 378.87
Descyano Citalopram
Catalogue No.:PA 30 94540
Molecular Formula : C19H22FNO
Molecular Weight : 299.39
rac-N-Trifluoroacetodesmethyl Citalopram
Catalogue No.:PA 03 57720
Molecular Formula : C21.H18F4N2O2
Molecular Weight : 406.37
S-(+)-N-Trifluoroacetodesmethyl Citalopram
Catalogue No.:PA 03 57730
Molecular Formula : C21H18F4N2O2
N-Trifluoroacetodidemethyl Citalopram
Catalogue No.:PA 03 57740
Molecular Formula : C20H16F4N2O2
Molecular Weight : 392.35
S-(+)-N-Trifluoroacetodidemethyl Citalopram
Catalogue No.:PA 03 57750
(+/-)-4-[4-(diMethylaMino)-1-(4-fluorophenyl)-1-hydroxybutyl]-3-(hydroxyMethyl)-benzonitrile, oxalate
Catalogue No.:PA 56 0801000
Molecular Formula : C22H25FN2O6
Molecular Weight : 432.45
Desfluoro Citalopram
Catalogue No.:PA 30 0941000
Molecular Weight : 306.41
Rac Didemethyl Citalopram Hydrochloride
Catalogue No.:PA 30 0941001
Molecular Formula : C18H18ClFN2O
Molecular Weight : 332.8
Citalopram Diol-Desfluoro Impurity
Catalogue No.:PA 03 0571000
Molecular Formula : C20H24N2O2
Molecular Weight : 324.42
Citalopram D3
Catalogue No.:PA STI 088926
Molecular Formula : C18H17D3FNO
Molecular Weight : 288.38
Citalopram Impurity A (IMP/09/18) -from IPC
Catalogue No.:PA IMP 09 18
4-(Hydroxy(phenyl)methyl)-3-(hydroxymethyl)benzonitrile
Catalogue No.:PAI 56 080001
Molecular Formula : C15H13NO2
Molecular Weight : 239.27
4-Benzoyl-3-(hydroxymethyl)benzonitrile
Catalogue No.:PAI 56 080002
Molecular Formula : C15H11NO2
Molecular Weight : 237.26
1-Phenyl-1,3-dihydroisobenzofuran-5-carbonitrile
Catalogue No.:PAI 56 080003
Molecular Formula : C15H11NO
Molecular Weight : 221.26
(S)-Didemethyl Citalopram Hydrochloride
Catalogue No.:PA 30 0941002
N-(3-(5-Cyano-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-1-yl)propyl)-N-methylnitrous Amide
Catalogue No.:PA 56 0801002
Molecular Formula : C19H18FN3O2
Molecular Weight : 339.37
1-Chloroethyl (3-(5-cyano-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-1-yl)propyl)(methyl)carbamate
Catalogue No.:PAI 03 002511
Molecular Formula : C22H22ClFN2O3
Molecular Weight : 416.88
N-Nitroso Desmethyl citalopram-d3
Catalogue No.:PA STI 089752
Molecular Formula : C19H15D3FN3O2
Molecular Weight : 342.39
4-(4-(Dimethylamino)-1-(4-fluorophenyl)-1-hydroxybutyl)-3-(hydroxymethyl)benzoic Acid
Catalogue No.:PA 56 0801003
Molecular Formula : C20H24FNO4
Molecular Weight : 361.41
4-(4-(Dimethylamino)-1-(4-fluorophenyl)-1-hydroxybutyl)-3-(hydroxymethyl)benzamide
Catalogue No.:PA 56 0801004
Molecular Formula : C20H25FN2O3
Molecular Weight : 360.43
4-(1-(4-Fluorophenyl)-1-hydroxy-4-(methylamino)butyl)-3-(hydroxymethyl)benzonitrile
Catalogue No.:PA 56 0801005
Molecular Formula : C19H21FN2O2
Molecular Weight : 328.39
4-(4-Cyano-2-(hydroxymethyl)phenyl)-4-(4-fluorophenyl)-4-hydroxy-N,N-dimethylbutan-1-amine oxide
Catalogue No.:PA 56 0801006
Molecular Formula : C20H23FN2O3
Molecular Weight : 358.41
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